Bicycle handlebar



FIG. 1 is a left side view of a bicycle handlebar showing my new design, the right side being a mirror image of that shown;

FIG. 2 is a top view thereof; and,

FIG. 3 is a front view thereof.

The broken lines shown in the drawing views are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a bicycle handlebar, as shown and described. 